Evaluation of bone repair around TiAlV implants with machined and modified surfaces: biomechanical study in rabbits

• Grant number: 14/26634-9
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: March 01, 2015
• End date: February 29, 2016
• Field of knowledge: Health Sciences - Dentistry - Oral and Maxillofacial Surgery
• Principal Investigator: Francisley Ávila Souza
• Grantee: Caroline Loureiro
• Host Institution: Faculdade de Odontologia (FOA). Universidade Estadual Paulista (UNESP). Campus de Araçatuba. Araçatuba , SP, Brazil

Abstract

In order to accelerate the early stages of the repair process around dental implants, reducing the osseointegration period, various measures have been suggested, including the topographic modification of the implant surface. The proposition of this study is to evaluate the behavior of the interface formed between bone and implant on the machined surfaces (SU) and modified by sandblasting and acid etching, commercially available (SJA). Conduct will be the topographic characterization of surfaces by means of SEM-EDX system prior to experimental surgery. Ten rabbits Albinus, will receive 20 implants 3.75x10mm in the medial portion of the right and left tibia, one implant of each surface in each tibia randomly distributed. At 3 and 6 weeks the animals will be anesthetized, and in vivo will measure the implant stability coefficient by resonance frequency analysis followed by biomechanical analysis through removal torque measurements. The values obtained will be taken to the analysis of variance and t test Tukey. After aforementioned analyzes, the animals will suffer euthanasia. Make-up characterization of topographic surface of the implants removed by EDX-SEM system for quantitative analysis of newly formed bone.